Abstract: The systems and methods disclosed herein relate to sensor/actuator devices capable of detecting and generating forces, for example, substantially simultaneously. The disclosed piezoelectric devices are capable of operating in multiple dimensions. In certain embodiments, the devices are incorporated into systems for monitoring the motion of an apparatus, such as a stylus, or for monitoring forces acting on an apparatus, such as an airplane. The detected forces may be used to reconstruct the motion of the apparatus, for recognizing handwriting, or for a variety of other purposes. The systems may further be used as actuators, for example, for controlling an apparatus or deforming a surface.

Abstract: The systems and methods described herein provide communication systems that allow for the transmission of voice and data over a wireless network. To that end, the systems described herein include a mobile wireless communication system, such as a GSM telephone, and a pen input device capable of collecting information about an image written on a writing surface and capable of transmitting that information into the wireless communication device.